Is it possible to do without the data cable?
yes.
you control your commlink wireless from your datajack
(or your trodes if you don't have a datajack and still want to use DNI)
if you dont have a datajack or trodes then you need to access AR without DNI.
This mean you need earbuds, image link in your contacts, subvocal microphone etc.
(or do you need that anyway if going AR? DNI only for VR....?)
there is little to no reason to ever use a wire to your commlink
(not even for security reasons since your commlink will transmit wireless anyway and someone with good skills in electronic warefare, use a cyberdeck and already hacked a mark on your commlink can snoop your communications out and to your commlink - you using a wire to your datajack does not matter)
you can have your video chat in a seperate window in your AR
actually everything you can do in VR you can do in AR.
Even "flying around" in the matrix or hacking devices (but you need a cyberdeck for that) can be done in AR.
Going VR is always kinda obvious (rag doll).